JP2008043237A - Packaged coffee beverage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaged coffee beverage in which hypotensive effect of chlorogenic acid falling in a coffee beverage is maintained even when storage temperature exceeds normal temperature. <P>SOLUTION: The packaged coffee beverage 100A is constituted such that a coffee beverage 40 is charged in a container (a can 1A) and the package is hermetically sealed, wherein a porous adsorptive body where fine holes each having a diameter of ≤0.7 nm account for 10 vol.% based on the whole of the fine holes, is encapsulated in the container as a porous adsorptive body adsorbing Hydroquinone selectively from the chlorogenic acid so as to eliminate the Hydroquinone. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a coffee beverage filled and sealed in a can, a PET bottle or the like.

  Coffee beverages contain chlorogenic acids that exert a blood pressure lowering action and an antioxidant action, and hydroxyhydroquinone that inhibits the blood pressure lowering action. Therefore, by selectively adsorbing and removing hydroxyhydroquinone in the coffee beverage with activated carbon, the hydroxyhydroquinone content relative to the chlorogenic acid content in the coffee beverage is reduced to less than 0.1% by mass, and the blood pressure lowering effect on the coffee beverage is reduced. Has been proposed (Patent Document 1).

WO2005 / 072533A1

  However, as described in Patent Document 1, even if the content of hydroxyhydroquinone relative to the content of chlorogenic acids in the coffee beverage is reduced, hydroxyhydroquinone increases or chlorogenic acids decreases depending on the temperature environment in which it is stored. As a result, the content of hydroxyhydroquinone relative to the content of chlorogenic acids increases. This phenomenon also occurs when a coffee beverage having a hydroxyhydroquinone content reduced with activated carbon is stored in an oxygen-impermeable container.

  Specifically, when a coffee beverage with a reduced hydroxyhydroquinone content is stored at room temperature, the content of chlorogenic acids does not decrease, but when stored at a temperature of 50 ° C., hydroxyhydroquinone increases and chlorogenic acids decrease. In addition, the hydroxyhydroquinone content increases with respect to the chlorogenic acid content, and the blood pressure effect decreases. For this reason, when the coffee beverage is provided as a canned beverage such as canned coffee, the increase in hydroxyhydroquinone and the decrease in chlorogenic acids occur due to temperature increase during transportation or in the warehouse, and the blood pressure lowering action decreases. In particular, when the coffee beverage is provided by a hot vendor, the blood pressure lowering effect is remarkable.

  In contrast, the present invention suppresses the hydroxyhydroquinone content relative to the chlorogenic acid content in the coffee beverage even when the storage temperature of the packaged coffee beverage exceeds room temperature, and the blood pressure lowering effect of the chlorogenic acids is reduced. The purpose is to make the most of it.

  When the present inventors have filled and sealed a coffee beverage in an individually filled packaging container, if the porous adsorbent having a specific pore size distribution is enclosed in the container, the porous adsorbent becomes chlorogenic acids. Therefore, even if the storage temperature of the coffee beverage is increased during distribution or storage, the hydroxyhydroquinone content relative to the chlorogenic acid content in the coffee beverage can be kept low. It is possible to maintain the blood pressure lowering action of acids, and further, by making such a sealing mode of the porous adsorbent specific, it becomes unnecessary to remove the porous adsorbent before drinking a coffee beverage. We have found that you can drink coffee directly from the container.

  That is, the present invention is a container-packed coffee beverage in which a coffee beverage is filled and sealed in an individually filled packaging container, and a porous adsorbent that selectively adsorbs and removes hydroxyhydroquinone with respect to chlorogenic acids in the container. Provided is a container-packed coffee beverage in which a porous adsorbent having a pore radius of 0.7 nm or less and a volume of pores of 10% or more of the whole pore volume is enclosed.

  In particular, the porous adsorbent is molded at least from the container mouth by a liquid-permeable material, or is formed into a sheet-like liquid-permeable material or a columnar or plate-like shape to which a granular porous adsorbent is fixed. An embodiment is provided in which a porous adsorbent is hooked in a container.

  According to the container-packed coffee beverage of the present invention, since the porous adsorbent that selectively adsorbs and removes hydroxyhydroquinone with respect to chlorogenic acids is enclosed in the container, the storage temperature of the coffee beverage during distribution or storage Even when the temperature exceeds normal temperature, especially when stored at 50 ° C. or higher for several weeks by a hot bender, the blood pressure lowering effect of chlorogenic acids in the coffee beverage can be maintained to the maximum.

  Furthermore, in the container-packed coffee beverage of the present invention, the porous adsorbent is defined and enclosed at least from the container mouth by the liquid-permeable material, and the sheet-like liquid passing through which the granular porous adsorbent is fixed According to the aspect in which the porous material is suspended in the container, the aspect in which the porous adsorbent molded in the shape of a column or plate is suspended in the container, the porous adsorbent is dispersed in the coffee beverage. However, it does not leak from the container mouth. Therefore, it is not necessary to remove the porous adsorbent enclosed in the container before drinking the coffee drink, and it is possible to drink the coffee drink directly from the container as in the case of the conventional container-packed coffee drink. it can.

  The container-packed coffee beverage of the present invention is obtained by filling and sealing a coffee beverage in an individual filling and packaging container. In addition to the coffee beverage, the porous beverage selectively removes hydroxyhydroquinone with respect to chlorogenic acids. An adsorbent is enclosed.

  Here, as individual filling and packaging containers, two-piece cans such as DI cans, three-piece cans such as welded cans, metal containers such as reseal cans, packaging bags such as glass bottles, PET bottles, pouch bags, gusset bags, cups, etc. Examples thereof include a paper pack container such as a so-called milk pack.

  The coffee beverage is mainly a coffee bean extract extracted by a conventional method using 1 g or more, preferably 2.5 g or more, more preferably 5 g or more of roasted coffee beans per 100 g of coffee extract. A raw material prepared by adding a sugar, a milk component, an antioxidant, a pH adjuster, an emulsifier, a fragrance and the like can be used as necessary. Among them, sucrose, glucose, fructose, xylose, fructose butter sugar solution, sugar alcohol, etc. can be used as sugar, and milk, milk, whole milk powder, skim milk powder, fresh cream, concentrated Milk, skim milk, partially skim milk, condensed milk and the like can be used.

  There are no particular restrictions on the type of coffee beans used in the coffee beverage, and examples include Brazil, Colombia, Tanzania, Mocha, Kilimangelo, Mandelin, Blue Mountain, etc. Species etc. can be used. Further, there are no particular restrictions on the roasting method, roasting temperature, roasting environment, etc. of the coffee beans, but the preferred roasting temperature is 100 to 300 ° C, particularly 150 to 250 ° C. There are a formula, a hot air type, a semi-hot air type, a method having a rotating drum, and the like. From the point of flavor, it is preferable to cool to 0 to 100 ° C., particularly 10 to 60 ° C. within 1 hour after roasting.

  The extraction method of the coffee liquid can also be a conventional method such as a boiling method, an espresso method, a siphon method, a drip method, etc. For example, roasted coffee beans or pulverized products thereof are used in water to hot water (0 to 100 ° C.). For 10 seconds to 30 minutes.

  From the viewpoint of blood pressure lowering action, the coffee drink preferably contains 0.01 to 1% by mass of chlorogenic acids, more preferably 0.05 to 1% by mass, particularly 0.1 to 1% by mass. Those that do are preferred.

  Furthermore, from the point of blood pressure lowering effect, after the container-packed coffee drink is manufactured on the production line, the content of hydroxyhydroquinone relative to the content of chlorogenic acids is less than 0.1% by mass when the general user drinks. , Preferably 0.08% by mass or less, more preferably 0.05% by mass or less, and still more preferably 0.03% by mass or less. The hydroxyhydroquinone content may be 0.00%. Thus, in order to make the hydroxyhydroquinone content relative to the chlorogenic acid content to be the above-mentioned mass% at the time when a general user drinks, the ratio of this content is set to the above-mentioned ratio even before the individual filling and packaging container is sealed and filled It is preferable to be in the range. Further, when the coffee drink is filled and sealed in an individual filling and packaging container and then placed under a high temperature of 60 ° C. or higher, it is preferably 0.05% by mass or less, and 0.03% by mass or less at the time before hermetic filling. More preferably.

  Usually, in the coffee liquid immediately after extraction, the content of hydroxyhydroquinone relative to the content of chlorogenic acids is about 1%. It is preferable to treat with a porous adsorbent that selectively adsorbs and removes hydroxyhydroquinone with respect to chlorogenic acids. If such treatment is not performed, it may be necessary to place a large amount of porous adsorbent in the container to be filled.

  Examples of chlorogenic acids include (i) 3-caffeoylquinic acid, 4-caffeoylquinic acid, monocaffeoylquinic acid such as 5-caffeoylquinic acid, (ii) 3-ferlaquinic acid, 4-ferlaquinic acid, 5 -Ferulquinic acid such as ferulacic acid, (iii) dicaffeoylquinic acid such as 3,4-dicaffeoylquinic acid, 3,5-dicaffeoylquinic acid, 4,5-dicaffeoylquinic acid, etc. The coffee beverage of the present invention can contain one or more of these.

Examples of the porous adsorbent that selectively adsorbs and removes hydroxyhydroquinone with respect to chlorogenic acids include activated carbon, reverse phase carrier, etc. Among them, the pore radius is 0.7 nm or less. Is preferably 10% or more of the total pore volume, more preferably 30% or more, particularly 50% or more, and activated carbon having a pore volume of 0.5 cm ³ / g or more, more preferably 0.6 cm ³ / g or more. Here, the pore radius is a value measured by the MP method described in the literature (Colloid and Interface Sc., 26, 46 (1968)). When the capacity of pores of 0.7 nm or less is less than 10% of the whole pore volume, chlorogenic acids are easily adsorbed in addition to hydroxyhydroquinone. Moreover, even if the pore volume is less than 0.5 cm ³ / g, hydroxyhydroquinone is hardly adsorbed.

As the porous adsorbent having such a pore radius, commercially available products can be used. For example, as activated carbon, EHSS, WH2C8 (Nippon Enviro Systems), Hakuho WH ₂ c (Nippon Envirochemicals), Dazai CW (Nikamura Chemical), Kuraray Coal GW (Kuraray Chemical), etc. can be used. Moreover, as a reverse phase support | carrier, YMC * ODS-A (YMC), C18 (GL Science), etc. can be used. These may be used alone or in combination of two or more as required.

  The molding mode of the porous adsorbent may be a granular material, a molded body having a predetermined shape, or the like, and may be a sheet shape in which the porous adsorbing body of the granular material is fixed to a nonwoven fabric or the like.

  The method of filling the porous adsorbent into the individually filled packaging container is that the porous adsorbent does not leak out from the container mouth when the container-packed coffee beverage is opened and the coffee drink is poured out from the container mouth. Like that. For this purpose, for example, the porous adsorbent enclosed in the container is defined at least from the container mouth by a liquid-permeable material such as a nonwoven fabric, a woven fabric, a mesh, a porous film, and a sponge having communication holes. To do. More specifically, when a powdered porous adsorbent is enclosed in a container, a container mouth portion formation region (by removing the cap or by breaking a part of the container surface becomes a container mouth portion. By sticking a sheet-like liquid-permeable material in the vicinity of the part), the porous adsorbent enclosed in the container is prevented from leaking out from the container mouth after opening the container mouth, or molded into a bag The powder-like porous adsorbent is accommodated in the liquid-permeable material, and the porous adsorbent is prevented from leaking from the container mouth by hooking it in the container, or the sheet-like liquid-permeable material The powder-like porous adsorbent is fixed to the sheet and the sheet-like liquid-permeable material is hooked in the container to prevent leakage of the porous adsorbent.

  In addition, as the porous adsorbent, those molded into a predetermined shape such as a columnar shape or a plate shape may be used, and leakage of the porous adsorbent is prevented by hooking such a molded body in the container. May be. In this case, liquid-permeable material does not necessarily have to be used, but if the porous adsorbent molded body collapses in the container due to vibration during distribution, etc., the broken piece is led out from the container mouth. In order to prevent this, it is preferable that a sheet-like liquid-permeable material is stretched in the vicinity of the container mouth portion forming region, or the porous adsorbent molded body is covered with the liquid-permeable material.

  The amount of the porous adsorbent enclosed in the individually filled packaging container can be appropriately determined depending on the internal volume of the container, the type of the porous adsorbent, the size of the pore radius, and the manner of enclosure in the container. For example, activated carbon having a pore radius of 0.7 nm or less and a volume of pores of 10% or more of the entire pore volume in the form of pellets (coagulated), or powdered activated carbon in a bag-like liquid-permeable material Or the activated carbon sheet in which the granular activated carbon is fixed to a liquid-permeable material such as a nonwoven fabric is immersed in a coffee beverage in a container having an internal volume of 200 to 250 mL, and enclosed, with respect to 200 g of the coffee beverage It is preferable to disperse 0.4 g to 1.0 g of activated carbon.

  Next, the container-packed coffee beverage of the present invention will be described more specifically with reference to the drawings. In each figure, the same numerals indicate the same or equivalent components.

  A container-packed coffee drink 100A shown in FIG. 1A is a can container 1A such as a DI can filled with a coffee drink 40 and sealed in the vicinity of the container mouth forming area 2 of the can lid of the can container 1A. A liquid activated material 20 is stretched, and granular activated carbon 30 is dispersed in a can on the side opposite to the container mouth portion formation region 2. As a method of stretching the sheet-like liquid-permeable material 20 in the vicinity of the container mouth forming area 2, after filling the can body 3 with the granular activated carbon 30 and the coffee drink 40 in the manufacturing process of the container-packed coffee drink 100A, A sheet-like liquid-permeable material 20 is adhered to the inner peripheral edge of the lid 4 with an epoxy resin or the like.

  As shown in FIG. 1B, in this container-packed coffee beverage 100A, the opening mechanism of the container mouth portion causes the pull tab 5 on the can lid 4 so that the tongue-shaped container mouth surrounded by the score line is formed. Since the part forming area 2 is pushed down and opened, the position where the sheet-like liquid-permeable material 20 is stretched is such that the depressed tongue-like portion does not collide with the sheet-like liquid-permeable material 20. Keep away from the inner surface.

  The sheet-like liquid-permeable material 20 is a woven fabric, knitted fabric, or net having a pore size of 20 to 50 μm made of synthetic fibers such as PET, PBT, PP, and pulp fibers from the viewpoint of preventing powder leakage. Nonwoven fabrics are preferred.

  According to this container-packed coffee drink 100A, since the granular activated carbon 30 is widely dispersed in the can, the adsorption efficiency of hydroxyhydroquinone of the activated carbon can be increased, and the container mouth forming area 2 is opened to provide the coffee drink 40. When drinking, the granular activated carbon 30 is not mixed with the coffee beverage 40 and leaks out.

  In this way, the method of spreading the sheet-like liquid-permeable material 20 in the vicinity of the container mouth forming area 2 and dispersing the activated carbon in the container uses a PET bottle or the like as the individual filling and packaging container in addition to the can container. Can also be used.

  A container-packed coffee beverage 100B shown in FIG. 2 is obtained by filling and sealing a can beverage 1A such as a DI can with a coffee beverage 40. The rib 6 protrudes from the inner surface of the can body 3 near the can bottom 7, and the rib 6 The activated carbon containing bag 31 is fitted between the bottom and the can bottom 7 and hooked. Here, the activated carbon storage bag 31 is formed by forming a sheet-like liquid-permeable material into a bag shape, filling the granular activated carbon 30 therein, and sealing it. In order to prevent the activated carbon containing bag 31 from coming off between the can bottom 7 and the rib 6, an outer frame having a shape retaining property is provided on the outer periphery of the bag and fixed between the can bottom 7 and the rib 6. Alternatively, it is preferable to provide an outer frame formed of an elastic member on the outer periphery of the bag so as to be elastically held between the can bottom 7 and the rib 6.

  Further, as a method of fitting the activated carbon containing bag 31 between the can bottom 7 and the rib 6 in this manner, after the activated carbon containing bag 31 is placed on the bottom of the can body 3 in the manufacturing process of the container-packed coffee beverage 100B, The rib 6 is protruded inward by ironing.

  As a modified form of this container-packed coffee beverage 100B, instead of the activated carbon containing bag 31, an activated carbon sheet punched to a size that fits just into the can bottom 7 may be fitted, and an activated carbon molded body molded to such a size May be fitted.

  A containerd coffee beverage 100C shown in FIG. 3 has a mesh-like or scalloped liquid passing through a coarse mesh on the can bottom 7 side of the rib 6 projected on the inner surface of the can body 3 in the same manner as the containerd coffee beverage 100B of FIG. The material 21 is fitted and the activated carbon containing bag 31 is arranged on the can bottom 7 side.

  According to this container-packed coffee beverage 100C, even if the size of the activated carbon containing bag 31 is not just large enough to fit into the can bottom 7, the activated carbon containing bag 31 is made into the container mouth by the mesh-like or sword-like liquid-permeable material 21. Therefore, when the coffee beverage 40 is drunk, the activated carbon containing bag 31 can be reliably prevented from blocking the container mouth portion serving as a drinking mouth.

  As a modified embodiment of the container-packed coffee beverage 100 </ b> C, an activated carbon sheet or an activated carbon molded body may be disposed on the can bottom 7 instead of the activated carbon containing bag 31.

  As a method of arranging the mesh-like or scallop-like liquid-permeable material 21 on the can bottom 7 side, adhesion with an epoxy resin or the like can be considered.

  The container-packed coffee beverage 100D shown in FIG. 4 has a container mouth portion formation and a region including the container mouth portion formation region 2 in the longitudinal direction of the inside of the can body 3 of the can container 1A with a mesh-like or saw-like liquid-permeable material 21. The activated carbon containing bag 31 is placed in a chamber that is divided into two chambers that do not include the region 2 and that does not include the container mouth forming region 2. Instead of the activated carbon containing bag 31, an activated carbon sheet or an activated carbon molded body may be put.

  In this case, the mesh-like or saw-like liquid-permeable material 21 that divides the inside of the can body into two chambers in the longitudinal direction is a mesh-like or synthetic resin-made saw-like material made of synthetic fibers such as PET, PBT, and PP. In addition, the method of attachment is preferably a method in which an outer frame having a shape-retaining property is provided and locked to a locking portion inside the can in addition to bonding with an epoxy resin or the like.

  A container-packed coffee beverage 100E shown in FIG. 5 is obtained by placing a cylindrical activated carbon sheet 32 in a can body 3 of a can container 1A and immersing it in a coffee beverage 40. In this case, it is preferable that the diameter of the activated carbon sheet formed into a cylindrical shape is slightly smaller than the inner diameter of the can body 3, and the activated carbon sheet 32 is erected along the inner wall of the can body 3. The activated carbon sheet 32 is a rigid sheet that can maintain a standing state along the inner wall of the can body 3 without being bent in the can container 1A even when immersed in a coffee beverage, and has elasticity against bending. For example, it is preferable to use a product in which activated carbon is adsorbed on urethane foam with an epoxy resin or the like.

  As a modified embodiment of the container-packed coffee beverage 100E, instead of the activated carbon sheet 32 formed into a cylindrical shape, a flat activated carbon sheet is rolled into a cylindrical shape and inserted into the container, and the activated carbon sheet is rewound in the container. Further, it may stand along the inner wall of the can body 3.

  In this way, according to the method in which the activated carbon sheet is formed into a cylindrical shape, or rolled into a cylindrical shape and inserted into the container, and the activated carbon sheet is erected along the inner wall of the can body 3, the can container 1A itself is a conventional one. It becomes possible to enclose the activated carbon in the coffee beverage 40 while using as it is.

  In addition, the method for standing the activated carbon sheet along the inner wall of the container is not limited to the can container, but other containers such as packaging bags such as bottles, PET bottles, pouch bags, gusset bags, cup-shaped containers, and milk packs. But it can be applied.

  For example, as shown in FIG. 6A, when the activated carbon sheet 32 is rolled into a cylindrical shape and inserted into the PET bottle 1B from the container mouth portion 2 ′, in the PET bottle 1B, as shown in FIG. The activated carbon sheet 32 spreads along the inner wall. Therefore, the coffee beverage 40 is filled and the cap 8 is fitted and sealed to obtain a container-packed coffee beverage 100F. When this is opened and the PET bottle 1B is tilted and the coffee beverage 40 is poured out from the container mouth portion 2 ′, the inner diameter of the PET bottle 1B becomes narrower toward the container mouth portion 2 ′. ), The activated carbon sheet 32 catches on the inner wall of the container near the container mouth and does not move further in the direction of the container mouth 2 ′. Therefore, the activated carbon sheet 32 does not prevent the coffee beverage 40 from being poured out.

Example 1, Comparative Example 1 (Manufacture of containerized coffee beverages)
A three-sided seal bag is produced from a paper filter (Yamanaka Sangyo Co., Ltd., Tealord Lpack PER-25) (size: rectangle with a side of 30 mm), and finely powdered activated carbon (Nippon Envide Systems Co., Ltd., EHSS) ) 0.2 g, 0.4 g, or 0.6 g was filled and sealed to prepare an activated carbon containing bag.

  On the other hand, as a coffee beverage, a coffee extract was obtained as follows.

  Extracted from crushed roasted coffee beans using hot water (90-100 ° C.), treated with activated carbon to reduce the ratio of hydroxyhydroquinone to chlorogenic acids (HHQ / CGA) to 5/10000 or less, and adjust the pH to The pH was adjusted to 6.4 using sodium bicarbonate (assuming the pH of the coffee with milk).

  200 mL of the obtained coffee extract was immediately put into a 2-piece can body together with the activated carbon containing bag, the can lid was closed, and retort sterilization (128 ° C., 11 minutes) was performed to obtain a container-packed coffee beverage of Example 1.

  As Comparative Example 1, a container-packed coffee beverage was produced in the same manner as in Example 1 except that the activated carbon containing bag was not put in the can container.

Example 2, Comparative Example 2 (Manufacture of containerized coffee beverages)
Containerized coffee beverages were produced in the same manner as in Example 1 except that granular activated carbon (Nippon Envied Systems, Inc., WH2C8) was used instead of finely powdered activated carbon (Nippon Envied Systems, Inc., EHSS).

Evaluation (storage test)
Storage at 20 ° C. or 60 ° C. for a predetermined period, and quantification of chlorogenic acids and hydroxyhydroquinone contained in the coffee extract was performed by HPLC according to the method described in the example of WO2005 / 072533A1 (Analytical instrument: Shimadzu Corporation, column) Inertsil ODS-2 inner diameter 4.6mm, sample injection volume 10μL, flow rate 1.0mL / min, detection of chlorogenic acids UV325nm, detection of hydroxyhydroquinone UV290nm, eluent A 0.05M acetic acid 3% acetonitrile solution, eluent B 0.05M acetic acid 100% Acetonitrile solution).

  The results are shown in the graphs of FIG. 7 (Example 1) and FIG. 8 (Example 2).

  From these graphs, according to the container-packed coffee beverages of Examples 1 and 2, the content of hydroxyhydroquinone relative to chlorogenic acids is not increased both when stored at 20 ° C. and when stored at 60 ° C. can do. Therefore, it becomes possible to make it 0.03 mass% or less necessary for obtaining a sufficient blood pressure lowering effect. In particular, when the amount of activated carbon filled in the activated carbon containing bag is 0.4 g or more, the content of hydroxyhydroquinone with respect to chlorogenic acids can be reduced to 0.03% by mass or less in a storage period of 2 weeks, and this can be achieved after 4 weeks of storage. It can be seen that it can be maintained.

  INDUSTRIAL APPLICABILITY The present invention provides a blood pressure lowering action to a container-packed coffee beverage that is filled and sealed in a can, a PET bottle or the like, and is useful for promoting sales of a container-packed coffee beverage.

It is sectional drawing of the sealing state (a) and opening state (b) of 100 A of container-packed coffee drinks of this invention. It is sectional drawing of the container-packed coffee drink 100B of this invention. It is sectional drawing of 100C of container-packed coffee drinks of this invention. It is sectional drawing of 100D of container-packed coffee drinks of this invention. It is sectional drawing of the container-packed coffee drink 100E of this invention. It is explanatory drawing of the effect | action of the activated carbon sheet in the container-packed coffee drink 100F of this invention. 3 is a graph showing the results of Example 1 and Comparative Example 1. It is a bluff of the result of Example 2 and Comparative Example 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1A Can container 1B PET bottle 2 Container mouth part formation area 2 'Container mouth part 3 Can trunk 4 Can lid 5 Pull tab 6 Rib 7 Can bottom 8 Cap 20 Sheet-like liquid-permeable material 21 Mesh-like or slag-like liquid-permeable material 30 Granular activated carbon 31 Activated carbon storage bag 32 Activated carbon sheet 40 Coffee beverages 100A, 100B, 100C, 100D, 100E, 100F Containerized coffee beverages

Claims (7)

  The coffee beverage is a packaged coffee beverage filled and sealed in an individually filled packaging container, and a pore radius of 0.7 nm as a porous adsorbent for selectively adsorbing and removing hydroxyhydroquinone with respect to chlorogenic acids in the container A container-packed coffee beverage in which a porous adsorbent having a pore volume of 10% or more of the whole pore volume is enclosed.   The container-packed coffee drink according to claim 1, wherein the individual filling and packaging container is a can, a PET bottle, or a packaging bag, and the porous adsorbent is activated carbon.   The container-packed coffee drink according to claim 1 or 2, wherein the porous adsorbent is defined from at least the container mouth by a liquid-permeable material.   A sheet-like liquid-permeable material is stretched in the vicinity of the container mouth portion forming area in the container, and on the side opposite to the container mouth-forming area of the sheet-like liquid-permeable material, a granular or massive porous adsorbent is a coffee beverage. The containerized coffee drink according to claim 3 dispersed in the container.   The container-packed coffee drink according to claim 3, wherein the powdery porous adsorbent is contained in a bag-like liquid-permeable material, and the bag-like liquid-permeable material is hooked in the container.   The container-packed coffee beverage according to claim 3, wherein the powdery porous adsorbent is fixed to the sheet-like liquid-permeable material, and the sheet-like liquid-permeable material is hooked in the container. The container-packed coffee beverage according to claim 1 or 2, wherein a porous adsorbent molded into a columnar shape or a plate shape is hooked in the container.

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